%0 Journal Article
%A Raab, Nicolas
%A Schmidt, D. O.
%A Du, Hongchu
%A Kruth, Maximilian
%A Simon, U.
%A Dittmann, Regina
%T Au Nanoparticles as Template for Defect Formation in Memristive SrTiO3 Thin Films
%J Nanomaterials
%V 8
%N 11
%@ 2079-4991
%C Basel
%I MDPI
%M FZJ-2018-05987
%P 869
%D 2018
%X We investigated the possibility of tuning the local switching properties of memristive crystalline SrTiO 3 thin films by inserting nanoscale defect nucleation centers. For that purpose, we employed chemically-synthesized Au nanoparticles deposited on 0.5 wt%-Nb-doped SrTiO 3 single crystal substrates as a defect formation template for the subsequent growth of SrTiO 3 . We studied in detail the resulting microstructure and the local conducting and switching properties of the SrTiO 3 thin films. We revealed that the Au nanoparticles floated to the SrTiO 3 surface during growth, leaving behind a distorted thin film region in their vicinity. By employing conductive-tip atomic force microscopy, these distorted SrTiO 3 regions are identified as sites of preferential resistive switching. These findings can be attributed to the enhanced oxygen exchange reaction at the surface in these defective regions
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000451316100004
%R 10.3390/nano8110869
%U https://juser.fz-juelich.de/record/856620